A textbook store sold a combined total of 414 physics an chemistry textbooks in a week. The number of physics textbooks sold was 60 more than the number of chemistry textbooks sold. How many textbooks of each type were sold?

Answer:

a) Lower bound = 39.5

b) Lower bound = 82.75

He will pick a sample of seniors in this instance.

Given statement,

Dr. Stuart wants to study whether there is a relationship between the number of hours a high school senior spends on social networking sites and their grade point average. he obviously cannot study every 12th grader, so instead, he will select a smaller of seniors to study.

→ In this case he will select a sample of seniors.

→ Dr. Stuart is interested in determining whether there is a correlation between a high school senior's grade point average and the number of hours spent on social networking sites. He will instead choose a smaller sample of seniors to study because he certainly cannot study every student in the 12th grade.

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Hence the equation 3(5x - 4) - 8x = 7x -12 has infinite number of solutions.

An equation is a statement of equality between two expressions consisting of variables, numbers and arithmetic operations.

Step-by-step explanation:

The equation 8x = 8(x - 1)+1 can be simplified as

8x=8x-8+1

0=-7( absurd)

This equation does not have any solution.

The equation 2x-5 = 2(x - 5) can be simplified as

2x-5=2x-10

-5=-10(absurd)

This equation does not have any solution.

The equation 22-6x = 2(3x - 11) can be simplified as

22-6x=6x-22

-6x-6x=-22-22

-12x=-44

x=44/12=11/3

This equation has only one solution.

The equation 3(5x - 4) - 8x = 7x -12 can be simplified as

15x-12-8x=7x-12

7x-12=7x-12

0=0, is an identity

This equation has infinite number of solutions.

Hence the equation 3(5x - 4) - 8x = 7x -12 has infinite number of solutions.

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Answer:

10

Step-by-step explanation:

Plug in x=0

5(0)+10

0+10=10

Answer:

y=10

Step-by-step explanation:

First, you have to substitute x=0

y=5 x + 10

y=5 x 0 + 10

Solve the equation for y

y=10

The statements that are  true about this study are

This is further explained below.

Generally, a scientific technique is used to create a discovery, test a theory or show an established truth.

In conclusion, The following are accurate claims concerning this study:

Random sampling is used in this investigation. In this investigation, a control group is used. Repeated measurements are employed in this investigation.

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Answer:

- Reflected over the x-axis  

- Compressed by a factor of 0.4.

- Translated 2 units left

Step-by-step explanation:

Given

\(y = \sqrt[3]{x}\)

\(y' = -(0.4)\sqrt[3]{x-2}\)

Required

The transformation from y to y'

First, y is reflected over the x-axis.

The transformation rule is:

\((x,y) \to (x,-y)\)

So, we have:

\(y = \sqrt[3]{x}\) becomes

\(y' = -\sqrt[3]{x}\)

Next, it was compressed by a scale factor of 0.4

The rule is:

\(y' = k * y\)

Where k is the scale factor (i.e. k = 0.4)

So, we have:

\(y' = 0.4 * -\sqrt[3]{x}\)

\(y' = -(0.4)\sqrt[3]{x}\)

Lastly, the function is translated 2 units left;

The rule is:

\((x,y) \to (x-2,y)\)

So, we have:

\(y' = -(0.4)\sqrt[3]{x - 2}\)

Answers:

-reflected over the x-axis

-translated 2 units right

-compressed by a factor of 0.4

171.248 Answer:

Step-by-step explanation:

You need to divide 600 by .35

Answer is

Answer:

Sin ? = 4/7

? = arcSin (4/7)

? = 35° (rounded to the nearest degree)

So the answer is 35°

Answered by GAUTHMATH

Answer:

D. -30

Step-by-step explanation:

EDGE 2021 I GOT 100%

Answer: 156!

Step-by-step explanation: i’m not going to lie, i guessed but, i ended up getting it right .

Answer:

decay

Step-by-step explanation:

y=28(0.438)^8

This is in the form

y = a b^x

a is the initial value and b is the rate of growth or decay

since b < 1 the function is decaying

Answer:178

Step-by-step explanation:

distribute, multiply -8 with - 21 and -2 . that would get you 168 + 16 - 6. add the 168 and 16, it equals 184, then subtracts it with a 6.

Answer:

I think the answer is A. Specialty shops that offer high-quality goods have been created to address one specific need

Answer:

5 pens = 15$ and 4 pencils = 4$

Step-by-step explanation:

7-3=4, so 4 pens is 12$

12/4 = 3, so 1 pen = 3$

Remove the pens from the equation

7x3=21

24-21=3

3/3=1, so each pencil costs 1$

4 pencils and 5 pens are worth $23.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.com

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

Let the cost of one pencil be x, and the cost of one pen be y.

Then we can set up the following system of equations based on the given information:

3x + 7y = 24 ...(1)

3x + 3y = 12 ...(2)

Solving these two equations, we can find that x = 2 and y = 3.

Now, we can use these values to find the cost of 4 pencils and 5 pens:

4x + 5y = 4(2) + 5(3) = 8 + 15 = $23

Therefore,

4 pencils and 5 pens are worth $23.

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Answer:

A

Step-by-step explanation:

Answer:

The answer is A) 31

Step-by-step explanation:

31 +37 +25 = 93

93 divided by 3 = 31

Answer:    A

Step-by-step explanation:

8,4 cause they in there intersect there

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refer to the image here

Answer:c

Step-by-step explanation:

The revenue functions of the calculator companies is the difference between their cost and profit functions

The price of each calculator when the revenues of AN Calculators and MN Calculators are the same is $2.5

The revenue functions are given as:

RAN (x) = (25 + 10x) (300 - 36x)

RMN (x) = (100+ 20x) (100 - 12x)

When the prices are the same, we have:

RAN (x) = RMN (x)

So, we have:

\((25 + 10x) (300 - 36x) = (100+ 20x) (100 - 12x)\)

Divide through by 20

\((5 + 2x) (75 - 9x) = (10+ 2x) (50 - 6x)\)

Using a graphing calculator, we have the following value of x

x = 2.5

Hence, the price of each calculator when the revenues of AN Calculators and MN Calculators are the same is $2.5

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The value of x from the given linear function is -48

Linear equations are equation that has a leading degree of 1. For instance the equation y = mx + b is a linear equation.

Given the equation below

-x/3 + 4 =20

We are to determine the value of x

Subtract 4 from both sides to have;

-x/3 + 4 - 4 = 20 - 4

-x/3 =20 - 4

-x/3 = 16

Multiply both sides by 3 to have

-x = 3(16)

-x = 48

x = -48

Hence the value of x from the given linear function is -48

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The correct statement regarding whether female and blue are independent events is given as follows:

D) Yes, P(Female ∩ Blue) = P(Female) ⋅ P(Blue)

Two events, A and B are independent, if, and only if, the probability of both events is equals to the multiplication of the probabilities of each event.

\(P(A \cap B) = P(A)P(B)\)

From the table, the probabilities are given as follows:

The multiplication of these probabilities is of:

0.7 x 0.7 = 0.49 = P(Female and Blue).

Hence the events are independent.

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When analyzing categorical data, it is often useful to examine the relationship between two variables. Crosstabs, or contingency tables, are commonly used to display the counts of observations in each combination of the two variables. However, these raw counts can be difficult to interpret, especially if the totals for each variable are different.
By transforming the counts into percentages of row or column totals, we can better understand the patterns and relationships in the data. Percentages allow us to compare the proportions of one variable within each category of the other variable, regardless of the total number of observations. This can help us identify any trends or patterns in the data that may not be immediately apparent from the raw counts.

For example, suppose we have a crosstab of gender and favorite color. The raw counts may show that more females than males prefer blue, but it's difficult to know if this difference is meaningful without knowing the total number of males and females in the sample. By transforming the counts to percentages of row totals, we can see that 40% of females prefer blue, while only 30% of males do. This suggests that there may be a relationship between gender and favorite color.

Overall, transforming raw counts into percentages of row or column totals can help us better understand the relationship between two categorical variables, especially when the totals are different.

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No, multiplying by 10x10x10 is not the same as multiplying by 10 factors of 3.

Multiplying by 10x10x10 is not equivalent to multiplying by 10 factors of 3. When you multiply a number by 10, you're essentially adding a zero to the end of it, shifting all the digits one place to the left. So, multiplying by 10 three times (10x10x10) adds three zeros to the original number. However, when you multiply by 10 factors of 3, you are essentially multiplying the number by 3 ten times consecutively. This results in a different outcome.

For instance, if you start with the number 5 and multiply by 10x10x10, you would get 5,000. On the other hand, multiplying by 10 factors of 3 would yield a much larger number, 59,049, because each multiplication by 3 amplifies the result. Therefore, the two operations are not equivalent.

Therefore, multiplying by 10x10x10 and multiplying by 10 factors of 3 yield different outcomes. The former adds three zeros to the original number, while the latter multiplies the number by 3 repeatedly, resulting in a much larger value. It's crucial to understand the distinction between these operations to avoid confusion and accurately calculate mathematical expressions.

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Answer:

2.6+7.4 or 2.4+7.6

Step-by-step explanation:

Both of the above equals to 10!

The length of the wire with a radius of 0.236 millimeters is 16.5 cm.

We are given the formula for the radius of a platinum wire in terms of its length L and resistance R:

\(r = 0.059L^{(1/2) } \ mm\)

We are also told that the resistance of the wire is 0.1 ohm.

We can use the formula for the resistance of a wire in terms of its length L, cross-sectional area A, and resistivity rho:

R = ρL/A

where;

We can rearrange this formula to solve for the cross-sectional area:

A = ρL/R

Substituting the given values, we have:

A = (10.6 x 10⁻⁸ ohm. m)(L m)/(0.1 ohm)

A = 1.06 x 10⁻⁶ m L

We can also use the formula for the area of a circle in terms of its radius:

A = πr²

Solving for the radius, we have:

r = √(A/π)

Substituting the expression for A, we have:

r = √[(1.06 x 10⁻⁶ m.L )/π]

Substituting the given radius of 0.236 mm, we can solve for the length L:

0.236 x 10⁻³ m = √[(1.06 x  10⁻⁶ m.L)/π]

Squaring both sides, we have:

(0.236 x 10⁻³ m)² = (1.06 x 10⁻⁶ m.L)/π

Solving for L, we have:

L = [(0.236 x 10⁻³ m)² π]/(1.06 x  10⁻⁶ m)

L = 0.165 m = 16.5 cm

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Answer:

Step-by-step explanation:

x=24

Answer:

X = 24

Step-by-step explanation:

Learn what 2/3 equals

2/3 = 0.666

Divide 16 until it equals that number

16/24 = 0.666

Mr. Red's salary is an illustration of an arithmetic sequence

The explicit rule of Mr. Red's salary is an = 500n + 29500

Mr. Red's salary is an arithmetic sequence with the following parameters:

First term, a1 = 30000

Common difference, d = 500

The explicit rule is calculated as:

an = a1 + (n - 1) * d

This gives

an = 30000 + (n - 1) * 500

Evaluate the product

an = 30000 - 500 + 500n

This gives

an = 29500 + 500n

Rewrite as:

an = 500n + 29500

Hence, the explicit rule of Mr. Red's salary is an = 500n + 29500

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Answer:

It's the second one

Step-by-step explanation:

It's the second one because 75 dollars is only being charged once and 25 dollars is being charged x amount of hours so you would make the equation

y = 25x + 75

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!